CBR Prova de Título de Especialista em Radiologia e Diagnóstico por Imagem (Brazil)

Practice session

A 32-year-old asymptomatic woman undergoes an abdominal MRI for incidental liver lesion characterization. The dynamic study with hepatobiliary contrast (gadoxetate disodium / Primovist) demonstrates a 3.5 cm well-circumscribed lesion in segment IVa that shows intense, homogeneous arterial phase hyperenhancement, becomes isoattenuating on the portal venous phase, possesses a central T2-hyperintense scar with delayed contrast uptake, and exhibits iso- to hyperintensity on the 20-minute hepatobiliary phase. What is the most likely diagnosis?

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